38mm Cylinder, Piston and Crankshaft Engine Kit for STIHL MS170/MS180/018
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- STIHL MS170 chainsaw—matching 38mm engine configuration
- STIHL MS180 chainsaw—matching 38mm engine configuration
- STIHL 018 chainsaw—matching crankcase and cylinder layout
Product Overview
Low compression, piston scoring, crank-bearing play, or catastrophic top-end damage can turn a simple fuel repair into a full engine rebuild. This kit addresses the cylinder, piston, and crankshaft area for a saw whose crankcase and ignition remain suitable for rebuilding.
Find the cause before assembly. A lean carburetor, intake leak, wrong fuel mix, blocked cooling fins, or air leak can destroy the replacement parts quickly.
Key Features & Performance
- 38mm cylinder and piston application
- Includes crankshaft-related engine repair components as shown
- For matching MS170/MS180/018 crankcases
- Supports major engine overhaul after measured diagnosis
Common Uses
- Rebuilding a saw with a scored cylinder
- Replacing a crankshaft with bearing or rod damage
- Restoring compression after a confirmed mechanical failure
Technical Specifications
- Product Type: Chainsaw cylinder/piston/crankshaft kit
- Bore: 38mm application
- Condition: New
- Replacement Type: Aftermarket
Installation & Fitment
- Pressure/vacuum-test the crankcase and inspect intake parts
- Clean all debris from the case and lubrication passages
- Check ring orientation, squish, bearing fit, and crank seals
- Use fresh correctly mixed fuel and tune with a tachometer after break-in
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
MS170/MS180 production revisions, bore size, crankcase, ignition, and included kit pieces can vary. Compare measurements and every component shown.
Frequently Asked Questions
Q: Will this fix a saw with no spark? A: No. It repairs mechanical engine parts, not ignition faults.
Q: Why did the original piston score? A: Lean fuel mixture, air leaks, poor lubrication, overheating, or debris are common causes that must be corrected.
Q: Is the bore 38mm? A: The listing identifies a 38mm application; measure before ordering.
Q: Should crank seals be replaced? A: They should be inspected and commonly renewed during a crankshaft rebuild to prevent air leaks.
Part Summary
keywords: Stihl MS180 cylinder piston kit, MS170 crankshaft rebuild, 018 chainsaw 38mm cylinder, Stihl low compression repair, chainsaw scored piston kit
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.